Pressure Relief Devices for CNG (NFPA52 - 4.5)

4.5 Pressure vessels complying with 4.4.5 or cylinders used for stationary storage without temperature compensation of the storage pressure shall be protected with one or more spring-loaded pressure relief valves in accordance with the ASME Boiler and Pressure Vessel Code.

Pipeline Dewatering, Cleaning, and Drying

Newly constructed pipelines are typically hydrostatically tested, using water as the test medium, upon completion of construction.

Once the hydrostatic testing has been completed, it is necessary to remove the water from the line and place the line in service. Dewatering can be a simple process or, if the procedure is not properly planned, a difficult
one.

Determine buoyancy of bare and concrete coated steel pipe in water and mud

Bouyancy of bare & concrete coated

To find the buoyancy in water in lb/ft :